smooth_contours_xld ( Contours : SmoothedContours : NumRegrPoints : )

Smooth an XLD contour.

smooth_contours_xld smooths the input XLD contours Contours and returns the smoothed contours in SmoothedContours. The smoothing is done by projecting the contours' points onto a local regression line (i.e., a least-squares approximating line), which is computed from NumRegrPoints on each side of the current contour point. This operator should be called, for example, before contours are scaled.


Parameters

Contours (input_object)
xld_cont-array -> object
Contour to be smoothed.

SmoothedContours (output_object)
xld_cont-array -> object
Smoothed contour.

NumRegrPoints (input_control)
integer -> integer
Number of points used to calculate the regression line.
Default value: 5
Suggested values: 3, 5, 7, 9
Restriction: (NumRegrPoints >= 3) && odd(NumRegrPoints)


Parallelization Information

smooth_contours_xld is reentrant and processed without parallelization.


Possible Predecessors

gen_contours_skeleton_xld, lines_gauss, lines_facet, edges_sub_pix


Possible Successors

affine_trans_contour_xld, gen_polygons_xld, local_max_contours_xld


See also

get_contour_xld


Module

Sub-pixel operators



Copyright © 1996-2005 MVTec Software GmbH